1-x分之x四次方-1.约分
问题描述:
1-x分之x四次方-1.约分
答
(x的4次方-1)/(1-x)=(x²+1)(x²-1)/(1-x)=(x²+1)(x+1)(x-1)/(1-x)=-(x+1)(x²+1).
1-x分之x四次方-1.约分
(x的4次方-1)/(1-x)=(x²+1)(x²-1)/(1-x)=(x²+1)(x+1)(x-1)/(1-x)=-(x+1)(x²+1).